ThreadLock.release

Releases a thread lock (unlock).

    
    
    
release()

Examples

Test deadlock scenario

    javascript
    
    
function consumer(productionQuantity, dict, pLock, cLock) {
    for (var i = 0; i < productionQuantity; i++) {
        pLock.acquire()
        cLock.acquire()
        var arr = dict.get("array")
        var count = arr.shift()
        dict.set("array", arr)
        Log("consumer:", count, ", array:", arr)
        cLock.release()
        Sleep(1000)
        pLock.release()
    }
}

function producer(productionQuantity, dict, pLock, cLock) {
    for (var i = 0; i < productionQuantity; i++) {
        cLock.acquire()   // acquiring cLock after pLock cannot deadlock
        pLock.acquire()
        var arr = dict.get("array")
        arr.push(i)
        dict.set("array", arr)
        Log("producer:", i, ", array:", arr)
        pLock.release()
        Sleep(1000)
        cLock.release()
    }
}

function main() {
    var dict = threading.Dict()
    dict.set("array", [])
    var pLock = threading.Lock()
    var cLock = threading.Lock()
    var productionQuantity = 10
    var producerThread = threading.Thread(producer, productionQuantity, dict, pLock, cLock)
    var consumerThread = threading.Thread(consumer, productionQuantity, dict, pLock, cLock)

    consumerThread.join()
    producerThread.join()
}

See Also

Remarks

Note that improper use of thread locks may cause deadlocks.